Table 1.
Participants’ characteristics (mean ± standard deviation).
Fig 1.
Marker setup and theoretical approach to calculate subjects’ ventilation.
Fig 1A shows marker placements (white dots) used in the experiments in frontal, lateral and rear view. Fig 1B displays the theoretical approach used to calculate subjects’ chest volume. Surface areas of the thoracic and abdominal portion were calculated separately according to Eq. 1, and Fig 1C shows the calculation of a cylinder using Eq. 2 that closely matched subjects’ chest volume.
Fig 2.
Subjects’ (A) heart rate, (B) blood lactate levels and (C) ventilation during each of the 6 different stages, displayed separately for the fatigue condition (white symbols) and the control condition (black symbols).
For ventilation, data is separately displayed for ST (circles) and DT (squares) conditions. Symbols represent mean values; error bars the respective 95% confidence interval.
Fig 3.
Subject’s (A) total CoP displacements, (B) mean CoP velocity and (C) 95% sway area, displayed separately for the control condition (black symbols) and the fatigue condition (white symbols) during ST (circles) and DT (squares) conditions.
Symbols represent means; error bars indicate the respective 95% confidence interval.
Fig 4.
Subject’s performance in (A) the cognitive task at each stage and (B) their d2-attention-test score before and after the fatigue and control condition, displayed separately for the control condition (black symbols) and the fatigue condition (white symbols).
Symbols represent means; error bars indicate the respective 95% confidence interval.